Ontario Class D (DZ) Practice Test 4

All 40 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

1. From which part of the lane should you approach a curve in a large truck?

   1. The inside of the lane
   2. The outside of the lane
   3. The centre line
   4. The shoulder

2. An oncoming motorcycle has its turn signal flashing. What should you do before turning left?

   1. Flash your headlights at it
   2. Make sure it is really turning
   3. Turn immediately in front of it
   4. Assume the rider will stop

3. Which item must appear on the daily log?

   1. The weather forecast for the day
   2. The price paid for each load
   3. The driver's home phone number
   4. Starting odometer reading

4. What extends the life of a truck's clutch and transmission?

   1. Shifting at the governed maximum
   2. Riding the clutch on every hill
   3. Skipping the clutch on upshifts
   4. Smooth, co-ordinated shifting

5. Which is a warning sign that you are too drowsy to drive?

   1. Noticing a sign
   2. Wanting to change radio stations
   3. Feeling hungry
   4. Drifting into the next lane

6. What does an operator's CVOR record include?

   1. The company's current bank balance
   2. All customer delivery addresses
   3. Collisions, convictions, inspections
   4. The driver's full medical history

7. After the first check, you have driven 240 km in two hours. Must you re-inspect the load?

   1. No, once per day is enough
   2. No, only after 3 hours
   3. No, only after 500 km
   4. Yes, 240 km has been reached

8. Under the handbook, what counts as limited visibility besides night-time?

   1. Can't see clearly 150 m ahead
   2. Driving at under 60 km/h
   3. Being in a construction zone
   4. Any day with cloud cover

9. Which vehicles fall under the commercial zero-tolerance rule for alcohol and drugs?

   1. Any needing Class A to F
   2. Only dangerous goods trucks
   3. Only buses with passengers
   4. Only vehicles over 20,000 kg

10. Which defects can lead to a commercial vehicle being impounded?

    1. A dirty or faded licence plate
    2. A missing fuel receipt in the cab
    3. Critical brake or steering defects
    4. A cracked bracket on one mirror

11. A yellow sign shows a truck entering from the left side. What does it warn of?

    1. Truck entrance on the left
    2. No trucks allowed on the left
    3. Truck stop ahead on the left
    4. All trucks must turn left

12. You pull out of a private driveway onto a road. Whom must you yield to?

    1. Only vehicles coming from the left
    2. Road traffic and sidewalk users
    3. No one, as long as you signal
    4. Only buses and emergency vehicles

13. Going down a gentle hill, how can you save fuel?

    1. Ride the brakes
    2. Back off the accelerator
    3. Keep steady throttle
    4. Shift into neutral

14. From May 11, 2026, which applicants do NOT need to show work-eligibility documents?

    1. All Class D applicants
    2. Class A applicants over 65
    3. Drivers from other provinces
    4. Class D with RV restriction

15. A person is hurt in a collision and there is no fire danger. What should you do?

    1. Move them into your cab
    2. Drive them to the hospital
    3. Have them walk around
    4. Leave them where they are

16. Which of these trucks is exempt from hours-of-service rules?

    1. A 3-axle truck hauling farm produce
    2. A flatbed carrying steel
    3. A cube van delivering parcels
    4. A tandem dump truck on a road job

17. A Class D licence covers motor vehicles heavier than what gross or registered gross weight?

    1. 11,000 kg
    2. 4,500 kg
    3. 14,000 kg
    4. 4,600 kg

18. Who should you ask about a new prescription's effect on driving?

    1. Your dispatcher
    2. Another truck driver
    3. Your doctor or pharmacist
    4. The police

19. What must an applicant for the RV-restricted Class D complete?

    1. The RV Learning Module
    2. A dangerous goods training course
    3. Mandatory entry-level training
    4. An air brake endorsement course

20. How must a load of loose gravel be carried so none falls off?

    1. Wetted down only
    2. Covered or otherwise secured
    3. Heaped as high as possible
    4. Carried only at night

21. For each randomly selected item, what must you do besides demonstrating the check?

    1. Explain the defect and your action
    2. Photograph it for the examiner
    3. Repair it on the spot
    4. Sign a repair order for it

22. A doctor reports a DZ driver's heart condition. What can follow?

    1. A fine for the doctor
    2. Automatic upgrade to Class A
    3. Nothing; such reports are ignored
    4. A suspension until cleared

23. A school crossing guard displays a stop sign. When may you proceed?

    1. After a full stop of five seconds
    2. When all, guard included, are clear
    3. When the children reach the centre line
    4. When the guard lowers the sign halfway

24. Your truck has air disc brakes behind body panels. How is pushrod stroke checked on the road test?

    1. You remove the wheels to reach them
    2. You explain it verbally
    3. You skip all the brake items entirely
    4. The road test is cancelled on the spot

25. What should you do with the retarder when you don't need it?

    1. Use it instead of the clutch
    2. Turn it off
    3. Leave it on always
    4. Use it to hold speed uphill

26. You see an air-suspension bag that is damaged and completely flat. How is it classed?

    1. Minor
    2. Minor if the truck is empty
    3. Not a defect
    4. Major

27. Which regulation under the Highway Traffic Act deals with security of loads?

    1. O. Reg. 555/06
    2. O. Reg. 512/97
    3. O. Reg. 363/04
    4. O. Reg. 199/07

28. What does the inter-axle differential lock do when engaged?

    1. Stops the front wheels from turning
    2. Disables the brakes on one axle
    3. Drives both rear axles equally
    4. Raises the second rear axle off the road

29. Where should you learn your truck's shift pattern?

    1. Other drivers' best guesses
    2. The maker's operating manual
    3. The annual inspection decal
    4. The CVOR certificate

30. Your truck's rear wheels keep riding up on corner curbs. What should you do?

    1. Use the sidewalk on purpose
    2. Turn faster to finish more quickly
    3. Go further in before turning
    4. Turn the wheel sooner and sharper

31. A round sign shows a truck in a red circle with a slash. What does it mean?

    1. Truck parking only
    2. Truck route ahead
    3. No heavy trucks on this road
    4. Trucks must stop ahead

32. You wait 40 minutes at a roadside inspection. How is this time logged?

    1. On duty, not driving
    2. Driving
    3. Sleeper berth
    4. Off duty

33. Leaving the curb after the roadside stop, which signal do you use?

    1. Four-way flashers only
    2. No signal at all is needed
    3. Left signal, flashers off
    4. The right turn signal

34. How far may auxiliary equipment stick out without counting toward vehicle width?

    1. 50 cm
    2. 10 cm
    3. 1 m
    4. 30 cm

35. Who must install wheels and tires on a commercial vehicle?

    1. Any service station attendant on duty
    2. A certified installer or mechanic
    3. Any driver who carries a jack
    4. The shipper's loading-dock staff

36. A yellow left arrow follows a green left arrow. What does it mean?

    1. Turn now before it goes red
    2. Pedestrians may now cross
    3. Go straight through only
    4. Don't start the turn

37. While straight backing, the rear drifts left. What should you do?

    1. Stop and walk away
    2. Keep going and finish fast
    3. Correct the alignment gently
    4. Turn the wheel hard right

38. You start the engine while holding the pedal, and the pedal does not drop at all. What does it mean?

    1. No assist; take it out of service
    2. The brake fluid level is too high
    3. The brakes are perfectly adjusted
    4. This is normal for a cold engine

39. During the air-loss test, what must you do with the spring (parking) brakes?

    1. Apply them
    2. Cage them
    3. Release them
    4. Leave the knob halfway

40. The hydraulic brake fluid is just below the minimum mark. How is it classed?

    1. A major defect
    2. A minor defect
    3. Not a defect
    4. A critical impound defect